Z/OS - Job using BXPBATCH

One of the the internal programmers are asking me (an AIX guy) why and how this should work because he cannot make it fly.

His instructions read "Use the su command from BXPBATCH. Run a job using BXPBATCH following one of these examples that shows a copy of the file:
on the PARM= statement include:
SH echo cp /etc/proflie /etc/junk | su

In AIX I have not seen pipe to su?
He said it does not work and I have never seen this use before.
Jon

Ok thanks guys.
I noticed in his writeup it said add that statement to the PARMS= and found some examples and sure enough it was in single quotes.
So he will try that first, then the suggested alternative. Thanks again.